<!DOCTYPE html> 
<html lang="en"> 
<head> 
<meta charset="UTF-8"> 
<meta name="viewport" content="width=device-width, initial-scale=1.0"> 
<title>示例13</title> 
<script> 
 let { b, c, ...rest } = { a: 10, b: 20, c: 30, d: 40 }; 
 console.log(b); // 20 
 console.log(c); // 30 
 console.log(rest); //{a: 10, d: 40} 
 </script>
 </head> 
 <body></body> 
 </html> 